JavaScript Events_form Guide
Form events and the FormData API handle form submission, validation, and data collection. The guide walks through Form Events & FormData. submit (form), reset, change (value committed), input (every keystroke). `new FormData(form)` — capture fields. `formData.get("name")`, `.getAll("name")` (checkboxes), `.append("k","v")`, `.has("k")`. Send: `fetch(url,{method:"POST",body:formData})`. Iterate with for...of. The guide is organized into 1 sections that build on each other, each pairing a prose explanation with runnable code. Related guides: Arrays, Strings, Numbers, Math, Date. This is one of 145 JavaScript guides on JS Reference — see the full list on the guides page. Practice what you learn in the JavaScript playground, and look up any unfamiliar term in the JavaScript glossary.